Hmm, that is odd. If you can, rerun the media creation tool on another PC and choose Create installation for another PC as this is how you make USB and DVD.
An upgrade shouldn't even go near the language screens so its odd that it did. It should use the settings inplace from previous install. Something has gone wrong
is there anything on C drive you want to rescue? try making this on another PC: http://www.howtogeek.com/howto/windows-vista/use-ubuntu-live-cd-to-backup-files-from-your-dead-windows-computer/
I would suggest a fresh install to fix this, once you copied everything you want to save off laptop, change boot order in bios so USB/DVD first, boot drive second, boot from the Installer USB/DVD
follow this guide:
http://www.tenforums.com/tutorials/1950-windows-10-clean-install.html
when you reach the screen asking for licence, click "I don't have a key" and win 10 will continue to install and reactivate once finished
On the screen where you choose where to install win 10, if it gives you an error about GPT drives, delete all the partitions on the hdd and press next. If it still gives error, cancel out of the installer and restart PC and start installer again, it will accept next on that screen this time (some PC just need a restart here)